Patent GB-191004688-A (GB)
Title: Improvements in Apparatus for use in the Manufacture of Spring Beard Needles.
Inventor: THOMPSON WILLIAM PHILLIPS
IPC: B21G1/00
Filed: 1910-02-24
Granted: 1910-10-06
Abstract: 4688. Thompson, W. P., [Excelsior Needle Co.]. Feb. 24. Forging - needles; angular bending; bending dies and formers; forging-dies; shearing; shearblades.-In apparatus for making spring-beard knitting-machine needles in which the reduced parts of the needles are obtained by compressing or swaging, a main shaft D, Fig. 1, with clutch connexion to the driving-pulley c conveys motion by worm and bevel gearing to a shaft G, which carries bevel-wheels in gear with corresponding wheels on shafts H, I. The wire which is fed in through a straightener J, rotated by a belt from a pulley on the shaft D, passes between gripping-jaws n, Figs. 1 and 4, through a severing- device L and between holding-jaws U which are carried on a turret T. The upper of the gripping-jaws is forced downward by a cam-surface s on a lever o, pivoted in a slide P and connected by links to a slotted lever M. The lever M is operated by a crank-pin q first to force the upper of the jaws n downward by means of the cam-surface s and then to reciprocate the slide P. The cutter L is operated by a pin Q on an arm R. One end of the blank is flattened to form the head, by the holding-jaws, the upper and movable jaws being forced down by a pin y on the arm R. The upper jaw may be maintained in a raised position against the action of a spring by a catch W tripped by a projection Q<1> on the arm R. At the first station, the wire is fed forward to the holding-jaws, the catch W tripped to allow the jaws to close under spring action, the projection y forced downward against the jaws for forming the head of the needle and the cutter'operated by the pin Q. The turret is intermittently rotated by cam and ratchet mechanism and at the second station the end p, Fig. 48, of the blank is swaged down by a swage 12 of ordinary construction. The swage is operated from the shaft J by a cam 13, roller 14, and bell-crank 15. The blank is then clipped to the proper length by shears 19 consisting of a horizontal and a vertical cutter operated by a cam 29 on the shaft. The point of the needle is next formed by a swage 30 similar to the swage 12 and operated by a cam 31. Fig. 48 shows the blank after the next operation, which consists in swaging the eye e by a tool 41 connected by a link 46 to a cam-operated lever 44, which serves to move the tool to operative position. The tool consists of a pair of worksupports co-operating with adjustable swages, which are carried in a holder pivoted in a slide, and which are operated by a toggle 58, 59 from an arm 61 connected by links to a cam-operated roller 65.. For forming the beard of the needle shown in Fig. 49, the slide 66 is moved into position by a cam on the shaft H, and a former plate 87, Fig. 24, with a former 88, is oscillated to bend the needle round an anvil 83. This oscillation takes place by means of a cam 96, a slotted lever 93, a sliding block 92, a rack 90, and a pinion on a shaft 85. The needles are finally ejected by means of a pin on an arm R', which strike the rear end of the work-holding jaws U, and thus allows the catch W to come into operation to keep the jaws open while a needle engages a projection on a receptacle and is ejected. Additional mechanism may be provided for forming the needle shown in Fig. 43 In this case, the operations for the first form of needle are all performed, and, in addition, the needle is bent and the head cut off by shears operated by a projection on the arm R'.